MERANCANG LAMPU RUMAH OTOMATIS MENGGUNAKAN SENSOR PIR DAN SENSOR LDR BERBASIS ARDUINO UNO

Proyek akhir ini bertujuan untuk merancang sistem kontrol lampu rumah otomatis menggunakan sensor PIR dan sensor LDR yang dihubungkan ke relay dan dikontrol oleh Arduino Uno. Pada umumnya saklar otomatis menggunakan satu sensor untuk satu kondisi tertentu saja. Sensor PIR digunakan untuk mengetahui ada atau tidak aktivitas manusia di suatu ruangan. Sementara itu sensor LDR digunakan untuk mendapatkan informasi intensitas cahaya sebagai sensor ini dapat di jadikan sensor yang berkaitan dengan kondisi gelap dan terang. Pengujian sensor PIR dilakukan dengan memvariasikan penentuan posisi sensor PIR sehingga sensor PIR dapat mendeteksi gerakan manusia. Pengujian terhadap sensor LDR dilakukan dengan cara dengan cara menyinari sensor LDR menggunakan cahaya lampu senter dengan intensitas yang bervariasi. Hasil menunjukan bahwa waktu respon untuk menyala/padamkan lampu sama bagi tiap sensor, baik untuk sensor PIR maupun sensor LDR, meski jaraknya bervariasa. Berdasarkan hasil waktu respon yang di peroleh dari sensor PIR, yaitu 0.05 detik, diperoleh jarak jangkauan dari sensor PIR yaitu < 4 meter dari manusia. Sedangkan sensor LDR dipengaruhi oleh intensitas cahaya dari sumber cahaya yang mengenai sensor LDR Kata Kunci : Manusia, Lampu, Sensor PIR, Sensor LDR, Relay, Arduino Uno

PERANCANGAN ALAT UKUR INTENSITAS CAHAYA MATAHARI

Intensitas cahaya matahari merupakan parameter yang penting untuk dipelajari karena berkaitan dengan cuaca dan iklim dipermukaan bumi. Intensitas cahaya ini dapat diukur dengan sebuah sensor yang sensitiv terhadap perubahan cahaya. LDR adalah salah satu sensor cahaya yang dapat digunakan pada alat ukur intensitas cahaya matahari karena resistansi pada LDR berubah terhadap intensitas cahaya. LDR yang digunakan memiliki luas permukaan 1cm2 berwarna kuning, dengan nilai resistansi ketika tidak ada cahaya adalah 88 K? dan ketika cahaya maksimum adalah 22 ?. Dalam penelitian ini telah dibuat sebuah alat ukur intensitas cahaya matahari menggunakan sensor LDR sebagai sensor cahaya, mikrokontroler Atmega8535 sebagai pusat pemprosesan dan LCD untuk menampilkan hasil pengukuran intensitas cahaya. Kata kunci: alat ukur intensitas cahaya matahari, LDR, intensitas cahaya

Automatic Electrical Appliances Control Panel Based on Infrared and Wi-Fi: A Framework for Electrical Energy Conservation

-Today, proprietary home automation targets very specific applications which operate mostly on a cable based infrastructure. In contrast to that, our implementation builds on a wireless platform for the automatic control of house hold electrical appliances. The nodes gather sensor readings in a home and transmit them to a central automation server. There, the readings are matched against a list of script statements. When there is a match, a specific action is performed. An important property of the system is that the control of all home appliances is done by means of the ubiquitous Infrared and Wi-Fi wireless technologies. This way, the co-operation between manufacturers is not a necessity in order to connect devices to the home automation network

Wireless sensors and IoT platform for intelligent HVAC control

Energy consumption of buildings (residential and non-residential) represents approximately 40% of total world electricity consumption, with half of this energy consumed by HVAC systems. Model-Based Predictive Control (MBPC) is perhaps the technique most often proposed for HVAC control, since it offers an enormous potential for energy savings. Despite the large number of papers on this topic during the last few years, there are only a few reported applications of the use of MBPC for existing buildings, under normal occupancy conditions and, to the best of our knowledge, no commercial solution yet. A marketable solution has been recently presented by the authors, coined the IMBPC HVAC system. This paper describes the design, prototyping and validation of two components of this integrated system, the Self-Powered Wireless Sensors and the IOT platform developed. Results for the use of IMBPC in a real building under normal occupation demonstrate savings in the electricity bill while maintaining thermal comfort during the whole occupation schedule.QREN SIDT [38798]; Portuguese Foundation for Science & Technology, through IDMEC, under LAETA [ID/EMS/50022/2013

RANCANG BANGUN ALAT PENGHITUNG JUMLAH BARANG DENGAN MENGGUNAKAN SENSOR LDR BERBASIS MIKROKONTROLER

Isnan Nurdiansah, 2010. Creating a "Instrument Design countdown the number of items using a microcontroller-based LDR sensor." Diploma Program Computer Science, computer engineering, Faculty of Mathematics and Natural Sciences, University of Surakarta Sebelas Maret. Calculation of the number of items at this time is usually done manually. For example, for calculating the number of items should be packed in a cardboard box in a small factory needed manpower to make record of the number of goods that enter into these boxes. With the recording done by human beings who have a limited memory can also cause double counting. From the above written problems, will create a tool that can perform the calculation accurately without any data manipulation. Tools that will be created using LDR sensors are connected to the microcontroller as a controller. Here will be designed and constructed a tool entitled "Countdown Tool Total Returns using LDR Sensor- Based Microcontroller". Overall, the amount of goods counter is equipped with two LDR sensors as input. And using a microcontroller AT89S52 as program-controlled device. LDR sensor can be combined with a microcontroller AT89S52 and programs using the language C. From the results of this tool-making done capable of calculating the amount of goods automatically and very accurately. If sensor A first blocked from the light sensors highlight then to B then the number will increase. And if the sensor B was blocked first highlight of the light sensor and then to A then the number would be reduced